Video signal processing method and device
a video signal and processing method technology, applied in the direction of digital video signal modification, electrical apparatus,pictoral communication, etc., can solve the problems of increasing transmission and storage costs, and achieve the effect of improving intra prediction efficiency, and increasing intra prediction efficiency
Inactive Publication Date: 2021-05-27
KT CORP
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Benefits of technology
[0018]According to the present invention, an efficient intra prediction may be performed for an encoding / decoding target block.
[0019]According to the present invention, there is an advantage that the efficiency of intra prediction can be improved by using the right and bottom reference samples.
[0020]According to the present invention, by considering both the forward direction and the inverse direction of the intra prediction mode, there is an advantage in that the efficiency of intra prediction can be increased.
Problems solved by technology
Therefore, when transmitting image data by using a medium such as conventional wired and wireless broadband networks, or when storing image data by using a conventional storage medium, costs of transmitting and storing increase.
Method used
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[0046]A variety of modifications may be made to the present invention and there are various embodiments of the present invention, examples of which will now be provided with reference to drawings and described in detail. However, the present invention is not limited thereto, and the exemplary embodiments can be construed as including all modifications, equivalents, or substitutes in a technical concept and a technical scope of the present invention. The similar reference numerals refer to the similar element in described the drawings.
[0047]Terms used in the specification, ‘first’, ‘second’, etc. can be used to describe various components, but the components are not to be construed as being limited to the terms. The terms are only used to differentiate one component from other components. For example, the ‘first’ component may be named the ‘second’ component without departing from the scope of the present invention, and the ‘second’ component may also be similarly named the ‘first’ c...
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An image decoding method according to the present invention can comprise the steps of: deriving first reference samples located at the upper end and on the left side of a current block; deriving second reference samples located on the right side and at the lower end of the current block; and acquiring a prediction sample for the current block on the basis of the first reference samples and the second reference samples, wherein the second reference samples can be derived on the basis of the first reference samples and temporary prediction samples generated by performing temporary intra prediction on the current block on the basis of a temporary intra prediction mode.
Description
TECHNICAL FIELD[0001]The present invention relates to a method and an apparatus for processing video signal.BACKGROUND ART[0002]Recently, demands for high-resolution and high-quality images such as high definition (HD) images and ultra-high definition (UHD) images have increased in various application fields. However, higher resolution and quality image data has increasing amounts of data in comparison with conventional image data. Therefore, when transmitting image data by using a medium such as conventional wired and wireless broadband networks, or when storing image data by using a conventional storage medium, costs of transmitting and storing increase. In order to solve these problems occurring with an increase in resolution and quality of image data, high-efficiency image encoding / decoding techniques may be utilized.[0003]Image compression technology includes various techniques, including: an inter-prediction technique of predicting a pixel value included in a current picture f...
Claims
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IPC IPC(8): H04N19/11H04N19/176H04N19/105H04N19/167H04N19/593
CPCH04N19/11H04N19/176H04N19/593H04N19/167H04N19/105H04N19/159H04N19/194H04N19/157H04N19/136
Inventor LEE, BAE KEUN
Owner KT CORP